B3128 Code – Left Front/Driver Door Unlock Circuit High

What are the Possible Causes of the Code B3128?
  • Faulty Inoperative Door Lock Actuator
  • Inoperative Door Lock Actuator harness is open or shorted
  • Inoperative Door Lock Actuator circuit poor electrical connection
  • Faulty Body Control Module (BCM)
  • Need help with this OBD II code? Our mechanics are available within west Michigan to help. Outside of our service area? Visit our Car Help Section where you can ask questions and get answers.

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